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Re: [avr-chat] Strange problem with ATMega32A-PU

From: Royce Pereira
Subject: Re: [avr-chat] Strange problem with ATMega32A-PU
Date: Thu, 28 Apr 2011 16:44:42 +0530

Hi Dave,

Searched the ATMega32A-PU data sheet. No 'CDIV' found.

Atmels migration from M32 to M32A document says nothing about any fuse etc.

I am suspecting a case of bad ICs.

I'm awaiting delivery of a couple of M32A's from another source. Will
try those & update the list.


On Thu, Apr 28, 2011 at 11:24 AM, Dave Hylands <address@hidden> wrote:
> Hi Royce,
> On Wed, Apr 27, 2011 at 12:29 AM, Royce Pereira <address@hidden> wrote:
>> Hi all,
>> I had a project working fine with an ATMega32L-16PU
>> .
>> Now I have received some of  the new ATMega32A-PU's.
>> The same project does not function on the newer devices (LCD is blank etc.)
>> Since I did not have older M32L's, I programmed a shorter version of
>> the project into an Mega16L. It worked fine.
>> I programmed the same (shorter Version) project into the newer M32A,
>> (taking care to modify the command lines for Mega32) and again it does
>> not work.
>> I am using the internal RC osc @ 8 MHz & JTAG disabled.
> I seem to recall that the newer devices have the CDIV fuse enabled by
> default which causes the clock to be divided by 8.
> --
> Dave Hylands
> Shuswap, BC, Canada
> http://www.davehylands.com

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